Endangered coral reef in Australia

The Great Barrier Reef in Australia–the biggest coral reef system in the world– is home to about 400 types of coral and 1,500 fish species. However, the corals there have been killed by overheated seawater resulting from recent climate change. Terry P. Hughes, a researcher of coral reef, reported that 67 percent of the corals had died in the north of the Great Barrier Reef.